阅读说明：本技术 针对综合管廊水平位移监测的激光测量装置及使用方法 (Laser measuring device for monitoring horizontal displacement of comprehensive pipe gallery and using method ) 是由 蔡奇鹏 林鼎宗 林浩 方舒新 黄翀 陈星欣 庄言 施颖 蔡叶沁 蔡东旭 于 2021-08-30 设计创作，主要内容包括：本发明提供了针对综合管廊水平位移监测的激光测量装置,包括：激光发射器、支架系统、刻度挡板系统；其中,所述激光发射器固定于综合管廊静止区域,用于提供激光束；所述支架系统包括多个支架,用于安装刻度挡板系统；所述刻度挡板系统由多个带刻度的刻度挡板组成,用于量测激光束在刻度挡板上的水平位置。本发明还提供了上述激光测量装置的使用方法。(The invention provides a laser measuring device for monitoring horizontal displacement of a comprehensive pipe rack, which comprises: the device comprises a laser emitter, a bracket system and a scale baffle system; the laser transmitter is fixed in a static area of the comprehensive pipe rack and used for providing laser beams; the bracket system comprises a plurality of brackets for mounting the scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles. The invention also provides a using method of the laser measuring device.)

1. Laser measuring device to utility tunnel horizontal displacement monitoring, its characterized in that includes: the device comprises a laser emitter, a bracket system and a scale baffle system;

the laser transmitter is fixed in a static area of the comprehensive pipe rack and used for providing laser beams; the bracket system comprises a plurality of brackets for mounting the scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles.

2. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: laser emitter hang in utility tunnel roof to control through infrared trigger switch.

3. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: the laser beam that laser emitter transmission keep the level along utility tunnel axis direction, pass the inside region that needs carry out the horizontal displacement monitoring of utility tunnel.

4. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: the support system is fixed on the cable support on one side of the comprehensive pipe gallery, and the support system cannot invade the limit range of the detection vehicle in the horizontal direction.

5. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: two supports which are closest to and farthest from the laser transmitter in the support system are required to be positioned outside a horizontal displacement monitoring area of the comprehensive pipe gallery and are kept static relative to the laser transmitter; the middle brackets are arranged at equal intervals.

6. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: the bracket comprises a horizontal extension rod and a vertical rotation rod; the horizontal extension rod is fixed on the comprehensive pipe gallery cable support and used for supporting the scale baffle; the vertical rotating rod is vertically fixed on the horizontal extension rod and is used for fixing a rotating shaft required by the scale baffle.

7. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 6, characterized in that: the scale baffle is connected to the vertical rotating rod through a rotating shaft and can rotate around the rotating rod; when the horizontal displacement monitoring of the comprehensive pipe gallery is not carried out, the scale baffle rotates to a storage position parallel to the direction of the laser beam; when the horizontal displacement measurement is carried out, the scale baffle rotates to the use position vertical to the laser beam around the shaft, and the scale baffle is fixed on the horizontal extension rod.

8. The laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, characterized in that: the scale baffle is arranged with a horizontal and a vertical scale net on the laser facing surface, the scale net is composed of main scale lines with 1 cm distance, and the main scale lines are provided with 1 mm sub-scale.

9. The method of using the laser measuring device for utility tunnel horizontal displacement monitoring of claim 1, comprising the steps of:

1) arranging a laser transmitter, a bracket system and a scale baffle system in the comprehensive pipe gallery;

2) the laser transmitter is turned on through the infrared trigger switch, and the laser beam is ensured to penetrate through the horizontal displacement monitoring area of the whole comprehensive pipe gallery;

3) sequentially opening the scale baffles from the direction close to the laser emitter to the direction far away from the laser emitter so that the laser beam is irradiated on the scale baffles;

4) the method comprises the steps that circular laser spots on the scale baffles are photographed in sequence, after the centroid coordinates of the circular laser spots are determined through an image analysis system, the scale baffles are rotated to be restored to an initial state, and the influence on the next scale baffle is avoided; after the centroids of the laser light spots on all the scale baffles are read, recording the centroids as initial values;

5) before reading the centroid coordinates of the laser spots in the new round, rechecking the centroid coordinates of the laser spots on the two scale baffles which are closest to and farthest from the laser transmitter, wherein if the centroid coordinates and respective initial values do not change, the laser transmitter is not disturbed, and coordinate correction is not needed; if the centroid coordinate and the respective initial value change, determining the correction values of all other scale baffles according to the centroid coordinate horizontal displacement change value of the scale baffle at the farthest end in a manner of being in direct proportion to the distance;

6) after the correction value is determined, the centroid coordinate of the laser spot is read for each scale baffle, the difference value between the centroid coordinate and the initial value is superposed with the correction value, and then the horizontal displacement value of the comprehensive pipe rack at the position can be obtained;

7) and repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.

Technical Field

The invention relates to a laser measuring device and method for monitoring horizontal displacement of a comprehensive pipe gallery.

Background

Along with the construction and development of cities, a large number of people gush to the cities, the construction of rail transit, underground comprehensive pipe galleries and high-rise buildings becomes the main melody of the city construction, and more foundation pit excavation projects are carried out in urban areas with dense population. In the excavation process of the deep foundation pit, the settlement and displacement of the peripheral soil body bring challenges to the normal use and safe operation of the peripheral building, in particular to the long linear building such as the adjacent underground comprehensive pipe gallery. Therefore, the safety of the existing underground comprehensive pipe gallery is ensured to be extremely important in the construction process of the foundation pit engineering through a monitoring means, the change rule of the structural stability of the pipe gallery is mastered through the analysis of monitoring data, the construction step sequence is adjusted according to monitoring data at any time, the potential safety hazard is eliminated, and the underground comprehensive pipe gallery is an important component of engineering information construction.

The utility tunnel, also called "common ditch", it has held including municipal administration, electric power, communication, gas, all kinds of pipelines such as plumbing, the settlement of piping lane structure, horizontal displacement, relative torsion etc. all will lead to the too big condition such as pipeline stress, even gallery body infiltration water leakage. Underground utility tunnel pipeline crane span structure, maintenance car passageway etc. occupy a large amount of corridor inner spaces, and monitoring condition is limited, and how to rationally carry out horizontal displacement monitoring also is the difficult problem of each monitoring unit all the time.

The existing horizontal displacement monitoring method comprises a small angle method, a sighting line method, a polar coordinate method and the like. The small-angle method needs to be implemented in a wide place, the total station needs to be rotated for many times, the displacement is converted by a trigonometric function according to the measured distance and angle, and the measurement precision can be guaranteed only by the expensive high-precision total station. The collimation method has large collimation error and even difficult collimation under the condition of long sight or turbid air in an underground structure space, and when the distance of a monitoring area is long, the 30-time magnification ratio cannot meet the reading requirement. The polar coordinate method also needs to adopt a high-precision total station for measurement, but both the actual angle measurement process and the actual distance measurement process have errors, so the measurement precision is lower, and the method is only suitable for horizontal displacement monitoring work with lower precision requirements.

The horizontal displacement laser measurement method is a monitoring method which takes a laser beam line as a reference line, a bracket system and a scale baffle system are arranged at each measurement point, a round laser spot on the scale baffle at the measurement point is photographed, the centroid coordinate of the round laser spot is determined through an image analysis system, and the centroid coordinate is compared with an initial value to determine the offset. The laser measurement method has the advantages of simple principle, practicality, low cost, simple and convenient reading, higher precision and good application prospect.

Disclosure of Invention

The invention provides a laser measuring device and method for monitoring horizontal displacement of a comprehensive pipe gallery, and overcomes the defects in the background technology.

The technical scheme adopted by the invention for solving the technical problems is as follows:

laser measuring device to utility tunnel horizontal displacement monitoring includes: the device comprises a laser emitter, a bracket system and a scale baffle system;

the laser transmitter is fixed in a static area of the comprehensive pipe rack and used for providing laser beams; the bracket system comprises a plurality of brackets for mounting the scale baffle system; the scale baffle system consists of a plurality of scale baffles with scales and is used for measuring the horizontal position of the laser beam on the scale baffles.

In a preferred embodiment: laser emitter hang in utility tunnel roof to control through infrared trigger switch.

In a preferred embodiment: the laser beam that laser emitter transmission keep the level along utility tunnel axis direction, pass the inside region that needs carry out the horizontal displacement monitoring of utility tunnel.

In a preferred embodiment: the support system is fixed on the cable support on one side of the comprehensive pipe gallery, and the support system cannot invade the limit range of the detection vehicle in the horizontal direction.

In a preferred embodiment: two supports which are closest to and farthest from the laser transmitter in the support system are required to be positioned outside a horizontal displacement monitoring area of the comprehensive pipe gallery and are kept static relative to the laser transmitter; the middle brackets are arranged at equal intervals.

In a preferred embodiment: the bracket comprises a horizontal extension rod and a vertical rotation rod; the horizontal extension rod is fixed on the comprehensive pipe gallery cable support and used for supporting the scale baffle; the vertical rotating rod is vertically fixed on the horizontal extension rod and is used for fixing a rotating shaft required by the scale baffle.

In a preferred embodiment: the scale baffle is connected to the vertical rotating rod through a rotating shaft and can rotate around the rotating rod; when the horizontal displacement monitoring of the comprehensive pipe gallery is not carried out, the scale baffle rotates to a storage position parallel to the direction of the laser beam; when the horizontal displacement measurement is carried out, the scale baffle rotates to the use position vertical to the laser beam around the shaft, and the scale baffle is fixed on the horizontal extension rod.

In a preferred embodiment: the scale baffle is arranged with a horizontal and a vertical scale net on the laser facing surface, the scale net is composed of main scale lines with 1 cm distance, and the main scale lines are provided with 1 mm sub-scale.

The invention also provides a using method of the laser measuring device for monitoring the horizontal displacement of the comprehensive pipe gallery, which comprises the following steps:

1) arranging a laser transmitter, a bracket system and a scale baffle system in the comprehensive pipe gallery;

2) the laser transmitter is turned on through the infrared trigger switch, and the laser beam is ensured to penetrate through the horizontal displacement monitoring area of the whole comprehensive pipe gallery;

3) sequentially opening the scale baffles from the direction close to the laser emitter to the direction far away from the laser emitter so that the laser beam is irradiated on the scale baffles;

4) the method comprises the steps that circular laser spots on the scale baffles are photographed in sequence, after the centroid coordinates of the circular laser spots are determined through an image analysis system, the scale baffles are rotated to be restored to an initial state, and the influence on the next scale baffle is avoided; after the centroids of the laser light spots on all the scale baffles are read, recording the centroids as initial values;

5) before reading the centroid coordinates of the laser spots in the new round, rechecking the centroid coordinates of the laser spots on the two scale baffles which are closest to and farthest from the laser transmitter, wherein if the centroid coordinates and respective initial values do not change, the laser transmitter is not disturbed, and coordinate correction is not needed; if the centroid coordinate and the respective initial value change, determining the correction values of all other scale baffles according to the centroid coordinate horizontal displacement change value of the scale baffle at the farthest end in a manner of being in direct proportion to the distance;

6) after the correction value is determined, the centroid coordinate of the laser spot is read for each scale baffle, the difference value between the centroid coordinate and the initial value is superposed with the correction value, and then the horizontal displacement value of the comprehensive pipe rack at the position can be obtained;

7) and repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.

Compared with the background technology, the technical scheme has the following advantages:

1. the scheme of the invention is a non-contact displacement monitoring scheme based on a photoelectric technology, has high monitoring response speed and can acquire deformation data at high frequency.

2. The invention has simple principle, practical method, convenient and quick monitoring implementation, greatly improves the working efficiency and has good working prospect.

3. Compared with the traditional monitoring method, the invention has low application cost and high precision, does not need to adopt an expensive total station for monitoring, is limited by the industrial manufacturing level, cannot ensure the precision of the total station in the use process and needs to be repeatedly calibrated.

Drawings

The invention is further described with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of a laser measuring device for monitoring horizontal displacement of a comprehensive pipe rack according to a preferred embodiment;

FIG. 2 is a schematic diagram of the bracket system and baffle system of a preferred embodiment.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like, are used in a broad sense, and for example, "connected" may be a wall-mounted connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, and those skilled in the art will understand the specific meaning of the terms in the present invention specifically.

Referring to fig. 1-2, the present embodiment provides a laser measuring device for monitoring horizontal displacement of a utility tunnel, comprising: the device comprises a laser emitter 2, a bracket system 3 and a scale baffle system;

wherein the laser emitter 2 is fixed on the static area 5 of the comprehensive pipe gallery and used for providing laser beams; the bracket system 3 comprises a plurality of brackets for mounting the scale baffle system; the scale baffle system is composed of a plurality of scale baffles 6 with scales and is used for measuring the horizontal position of the laser beam on the scale baffles 6.

Specifically, laser emitter 2 hang in utility tunnel roof through laser emitter dead lever 1 to control through infrared trigger switch. The laser beam that laser emitter 2 sent keep the level along utility tunnel axis direction, pass the inside region 4 that needs carry out the horizontal displacement monitoring of utility tunnel. The support system 3 be fixed in on the cable support of utility tunnel one side, support system 3 can not invade the limit scope of detecting the vehicle on the horizontal direction.

Two supports in the support system 3, which are closest to and farthest from the laser transmitter 2, need to be positioned outside a horizontal displacement monitoring area of the comprehensive pipe gallery and are kept static relative to the laser transmitter 2; the middle brackets are arranged at equal intervals.

Specifically, the bracket comprises a horizontal extension rod 31 and a vertical rotation rod 23; the horizontal extension rod 31 is fixed on the comprehensive pipe gallery cable support and used for supporting the scale baffle 6; the vertical rotating rod 23 is vertically fixed on the horizontal extending rod 31 and is used for fixing a rotating shaft required by the scale baffle 6.

The scale baffle 6 is connected to the vertical rotating rod 23 through a rotating shaft and can rotate around the rotating rod; when the horizontal displacement monitoring of the comprehensive pipe gallery is not carried out, the scale baffle 6 rotates to a storage position parallel to the direction of the laser beam; when the horizontal displacement measurement is performed, the scale baffle 6 rotates around the shaft to the use position perpendicular to the laser beam, and the scale baffle 6 is fixed on the horizontal extension rod 31.

The scale baffle 6 is provided with scale nets in the transverse direction and the longitudinal direction on the surface facing the laser, the scale nets are composed of main scale marks with the distance of 1 cm, and the main scale marks are provided with 1 mm of sub-scales.

When the measuring device is used, the measuring device comprises the following steps:

1) a laser emitter 2, a support system 3 and a scale baffle system are arranged in the comprehensive pipe rack;

2) open laser emitter 2 through infrared trigger switch, ensure that the laser beam passes whole utility tunnel horizontal displacement monitoring area.

3) Starting from the direction close to the laser emitter and moving away from the laser emitter, the scale baffles 6 are opened in sequence, so that the laser beam is irradiated on the scale baffles 6.

4) The circular laser spots on the scale baffles 6 are photographed in sequence, after the centroid coordinates of the circular laser spots are determined through an image analysis system, the scale baffles 6 are rotated to restore to the initial state, and the next scale baffle 6 is prevented from being influenced; after the centroids of the laser spots on all the scale baffles 6 are read, recording the centroids as initial values.

5) Before reading the centroid coordinates of the laser spots in the new round, rechecking the centroid coordinates of the laser spots on the two scale baffles 6 which are closest to and farthest from the laser emitter 2, if the centroid coordinates and respective initial values do not change, the laser emitter 2 is not disturbed, and coordinate correction is not needed; if the centroid coordinate and the respective initial value are changed, the centroid coordinate horizontal displacement change value of the scale baffle 6 at the farthest end is determined to be the correction value of all other scale baffles in a manner of being in direct proportion to the distance.

6) After the correction value is determined, the centroid coordinate of the laser spot is read for each scale baffle 6, the difference value between the centroid coordinate and the initial value is superposed with the correction value, and then the horizontal displacement value of the comprehensive pipe rack at the position can be obtained.

7) And repeating the step 5) and the step 6) on a subsequent new observation period until the monitoring of the horizontal displacement of the comprehensive pipe rack is finished.

The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.